Istvan Matejcsok 85656dd717 test(3d): populate baseline-webgl (47 browser goldens) + clean stale diff artifacts per run ...

- baseline-webgl/: first population from the passing local Chromium renders
  (47/47 under the parity floor) — activates the webgl-self regression gate
  (floor 0.005). CI may re-promote its own renders if the Linux/swiftshader
  rasterization differs beyond the floor (the README's CI-promote flow).
- compare-dirs.ts: recreate the output dir on every run — triptychs/heatmaps
  are only written for CHANGED pairs, so artifacts from earlier (redder) runs
  lingered and misreported scenarios that had since gone green (a stale
  red-state gen-cylinder triptych survived three green runs).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

2026-07-03 15:45:58 +02:00

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